Valve



May 31, 1927.

s. SUTTON VALVE Filed April 16, 1921 v Patented Mayer 1927.,

1 ing devices. a

valves" andparticularly to th at. class of valve designed as relief valves for vacuui11, -Clean In iceitain typesof vacuu nj cleaning evices 1t -1S necessaryto provide a relief valve int-he device preferably between the dust separator and the pump in order to admit the pump is being run;

My 'valve is particularly designed tofop-j erate as a relief valve in such apparatus. 5 F01; the purpose of disclosing mydinvention I have illustrated one embodiment thereof in the accompanying drawing in which: g a i Figure 1 is vacuum cleaning device showing my relief valvein position; a

Fig. 3

' lineii fl of Fig. 2looking downwardly, and

connections of the apparatus into, the dust separator 2." Leading from thedust separator is a conduit 3 which connects by the pipe 4 with the vacuum producingp'ump not shown. The relief valve 5 is placed inthe conduit 3 so that in event the nozzle conj 'nections or outlets In thesy'stemr-are closed air will be admitted into thelpipes 3 andt to thereby prevei'itan' undue load being imposed upon the driving motor for the pump. "It isjobvious that as long, as the pump issuokingair throughthe'parts 1, 2, 3 and 4 air must be supplied to these conduitsas otherwise-too great a load would be i-m5 posed upon the motor driving. the mm, Ordinarily with the nozzle openings ofjthe electric motor.

My valve is designed to open-.w tha f apparatus open, air passes therethrough. It frequently happens that these openings are closed or nearly closed. Un'der such v conditions the relief valve 5 opens to permit the air to pass therethrough which prevents ,too great a load being placed on the minimum excess of load upon the motor. As shown in the constructlon illustrated I provide an annular casing-.6 havinga screw- :Mydnventionrelates to improvements in fltpartialsectional view of a1 Fig.2 is a-sectional viewof my relief 'valve; r s asectional view talren onfhe} "Application filed April 16,1921. Serial No, 461370- threaded shoulder 7 formed on the outer periphery thereof to engage in the screw-'9' threads .of :a-nopeningin-thelpipe 3;;jfTl'1isf casing is also provided with an annular flange'fS adapted'to seat against the; pipe.

' wILLIAivrf's. summon, oraoc Fon-n; r- LINoIs'n-ss eiioa TO AMERICA zaanr ron COMPANY, or CHICAGO'yILLINQm; Aoonrolmrron orinnw JERSEY; :3

The said' cas ing is also provided at its outer-.. end with an outwardly flared entrance por-I tion, and at its inner end with a beveled: portion 9 to provide a seatfor t he'valve disc ,10 having a, reacting surface in the form'of; an"annularfgro ovelll formed -in a the under surface of the disc. The annu la r grooye is provided with a downwardly and Qoutwardly inclined outer. wall portion; .a downwardly and inwardly inclined inner wall portion, and; a, horizontal intermediate" v portion,, j 1The downwardly and inwardlyiinclinejd wall portmn is offgreater width, or .fdeptlr than said downwardly and outwardlyinclined-outer wallportion'owing to "the that a part ,o f said inwardly and downwardlyextending inner} wall portion 1s formedupon the edge of a "central praised portion '10 providedup'on the underside;

the valve disc The seat engages; a, part of thesur'fac'e of this groove in such.

a manner thatthe" air wheii passing through- Q thyalveimpacts on the entrance side andreacts "on the exitsid'e of the groovezc'ausing the disc. to lift easilyfroin its seat.

The'disc 10 is provided with a stem "-12 H passing through the inwardlytapering hub I, 13 of a spider 14 integrally formed with'thejcasing 6. The lower-rendiof the valvepis. provided with an adjustable nut 15 adapted do i to make screw-threaded engagement .with T the stem and retain between it anda shOulQ der 16 on the hub 13 a coil spring-17 which tends to'maintain;the valve in closed position, The nut 15 beingadjustable on the stemgp'rovides means) whereby the tension I of" the "spring may be varied to vary the extent of vacuum which must be produced in the pipe 3 before the valve will be opened;

Due'flto' the construction of the seat .and' surface .of the valve I have'provided means whereby the diiference in the load imposed upon the motor to open the ,svalve'lpartially ,1, v j .or completely, is negligible; I have found i '7 that in relief valves as heretofore constructed for this purpose, while the valve may be? set to open at a-precleter1nine'c l partial vacuum; which "imposes predetermined load 1 uponlthemo'tor, inofrder to completelyopen thevalv'e toiadmit a greateriamount of air tothe conduit a'loa'disiinposecl on the m0 tor to such an eXtent that there is danger ofygthe rnotorburning out. I have found f that theiyal've of my invention iinposes no appreciableload uponthe inotor for open v ing the valve to its fullest extent over that:

" 1 required to partially open the valve.

-, Having thus described- 1113 linventioin- What I claiin as new anddesire to secureby .Letters Patentis: v

lL iL -valve of the "character described comprising a casing liavingflan internal an; niil'arr wall terininatinggat the outlet end in- V a valv-e"'seatja-valfve disk having.an en'-; tlai'ge'd central portion at its inner sideand an annular groove adjacent its'periphery;

said,"grOQVG haVing a relatively Wide in Wai'dly inclined Wall COl'lStitutl11g.tl1e"138 ripliery of, said enlarged central portion, a narrow outwardly-inclined outer wall, portion and a horizontal intermediate all 7' port on, an intermed ate portion of said inwardlydnclined I Wall adapted to engage ;said valve seat, when the Valve closed; said annular groove servingf'to receii e the adjacent end of said v annular "casing; the.

4 'o ter andintermediate" Wall portions of said groove lying abioiit'an'd in norrnally clined Wall projecting within said casing.

.spacedj relation tothe adjacentputer por tion of said annnlarcasing-to 'providefa passage therebet-Ween, said inwardly-inwhen the Valve is seated to provide a Wedgeflike annulaii'space between said enlarged central po'rtionof the Valve disk and the adjacentportion of the internal "anniilar twallf of the/casing below the Valve seat whereby, when said Ara-vs. is Iactuat d, to 1 cause the fluid to instantly. pass through" said passage andreact vupon the alls theree of and ,uponj tlie valve'seat tofuIi'sea t and ,maintain said iialve disk tially asspeqilie'd 11nseated, substanside, a stem extending "therefron' and slide V ably'engaging said hubysa'i'd valve di-scfbeingproyided Witli an annularygroove ,adj'a 4 cent to its peripheryhaving a relatively ide-inWardly inclined inn-er Wall portion adapted toengage saidVale seat, anarrow outward]y-in'clined outer wall portion and a horizontal intermediate Wall portion; the.

outer andintermediate 'Wa11 fporti0ns' "of said the fa'djac'ent outerf'portions of said casing to pr v oeapassage,tlierebetween and S6IV4 mg, When 'sald ale"1s actuated,' to cause the fiuidtoinstantly pass throughsaid pas sage and react 'upon ftlie'fwalls'thereof to so groove being arrangedin' spaced relationto 7' unseat and maintain said'v'alve discgunj seated, a' alve spring for normally inaintaming sa d valve dlscfi'n seated position,

and flneans for controlling thetension of said spring, substantially as specified,

In Witness whereof, I have hereuntosubscribed my'naine Y i WILLIAMSzSUTTONJ 

